Add contributor guidelines.
Added updates from @unusualbob, fix semicolon preference.
Merge pull request #86 from martindale/contributing

Contributor Guidelines
Added confirmation prompt for skipping a track

Added a line to prompt the user before skipping the track
fixed parameters for skip condition

wasn't matching
Cleaned up confirmation prompt code

removed explicit parameter, and redundant returns
Merge pull request #96 from naterchrdsn/master

Added confirmation prompt for skipping a track
Adding old responsive tweaks to actual repo
Merge pull request #97 from jmoeltjen/master

Adding old responsive tweaks to actual repo
Merge branch 'master' of github.com:martindale/soundtrack.io into soundtrack.io

Conflicts:
	public/css/main.css
Merge branch 'soundtrack.io' of github.com:martindale/soundtrack.io into soundtrack.io
Fix some crashes in source gathering.